<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>01.图片格式</title>
        <style>
    body{background-color: yellow;}
</style>
    </head>
    <body>
        <img src="./img/331494ae590a3d79.png" alt="">
        <img src="./img/cae17b72484dfe22.png" alt="">
        <img src="./img/f7f2ddbe6a856afe.gif" alt="">
    </body>
</html>